Hey Dave, Jon is right. When i first flew my Phoenix 5 several years ago, I had a Rev Up on it and it was lacking to say the least. I put the APC on there, and and it was a HUGE difference. I was running an 11 7.5 Revup and went to 11x7 APC. It was WAY faster and and had much more authority on takeoff. Keep in mind that your Dalotel is a tail dragger and Rev Ups are fragile. You will need a prop on every nose over I bet. I broke one with my fingers way back when my old Supertigre .46 kicked on me. I was shocked that the prop broke and didnt hurt my fingers...well it hurt, but no damage.
They are very light and rev quickly, but at the same time your tune on the low end has to be perfect since there is almost no flywheel effect.